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video/vldmpoolregister(3d) -- set up a DMbufferpool for video transfer
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vlDMPoolGetParams queries the video library for the parameters required to create a DMbufferpool which can be used for video transfers on the specified path and memory node. This routine should be called after dmBufferSetPoolDefaults(3dm) and before dmBufferCreatePool(3dm). vlDMPoolRegister associates the DMbufferpool with the given path and node. This is only necessary for paths where video is the source and memory is the drain. This call should be made before any transfer has begun on the spec... |
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video/vleventrecv(3d) -- event handling routines
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vlPathGetFD returns the file descriptor associated with the specified path. This FD can be used in conjuction with a select(2) call for notification that events are available for the path. vlEventRecv returns the next event queued on the specified path. If no event is available vlEventRecv returns -1 and sets vlErrno to VLAgain. If the event is a VLTransferComplete event from a video source to a memory drain, the event will have a DMBuffer associated with it. This buffer must be obtained and rel... |
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video/vlgetconnection(3d) -- manage the connectivity of a VL path
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svr Specifies the server handle. path Specifies the path handle. node Specifies the node to get connection information from. port Specifies the port to get connection information from. nodelist portlist On return, (nodelist[i], portlist[i]) specify the source or target connections to (node, port). n On entry, n points to an integer value specifying the size of the nodelist and portlist arrays. On exit, n is updated to reflect the actual number of connections returned.... |
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video/vlgetconnectioninfo(3d) -- get information about a video connection
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path Specifies the path. source Specifies the source node. drain Specifies the drain node. |
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video/vlgetcontrol(3d) -- get or set control VL value
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svr The handle for the video server to use. path Specifies a handle to the path. node Specifies the node on which the control resides (VL_ANY specifies any node) value Specifies a pointer the control's values or return values. type Specifies the control type, as defined in |
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video/vlgetcontrolinfo(3d) -- get and free information about VL controls
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svr Specifies the video server handle. path Specifies the path of interest. node Specifies the source or drain of interest. May be VL_ANY if either a source or drain control is acceptable, or if the control is not associated with either a source or drain. type Specifies the control type of interest. info Specifies a pointer to a VLControlInfo structure which was previously allocated by vlGetControlInfo.... |
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video/vlgetcontrollist(3d) -- get and free the list of valid VL controls for a path
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svr Specifies the server. path Specifies the path. list Specifies a pointer to a VLControlList structure which was previously allocated by vlGetControlList. |
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video/vlgetdevice(3d) -- get VL device information
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If vlGetDeviceList is supplied with a pointer to a VLDevList struct, it fills in the struct with a list of available devices. The device information includes the number of devices available, and an array of VLDevice structs, each of which describes a device. The VLDevice struct contains the index of that device, the device name, the number of nodes available and a list of VLNodeInfo structs, describing the available nodes. The device names returned may be mapped to video products as follows: vin... |
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video/vlGetFilled(3d) -- get the number of valid entries in a VLBuffer or given path.
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server expects the VL server to use path expects the VLPath for which you want a filled count node expects the VL_MEM VLNode on the path buffer expects the VLBuffer on the VLPath for which you want a filled count |
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video/vlGetFrontierMSC(3d) -- get the frontier MSC associated with a particular VL_MEM node
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server expects the VL server to use path expects the VLPath for which you want a frontier MSC memNode expects the VL_MEM VLNode on the VLPath for which you want a frontier MSC |
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video/vlgetnextvalid(3d) -- VL buffer management routines
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vlGetActiveRegion returns a pointer to the video frame data. The region is determined by the settings of the VL_OFFSET controls. The default is the region of valid video data. vlGetDMediaInfo returns a pointer to a DMediaInfo struct containing general information. vlGetImageInfo returns a pointer to a DMImageInfo struct containing image specific info. vlGetLatestValid returns the info struct of the most recently received frame. vlGetNextFree returns the info struct of the next free buffer. vlGet... |
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video/vlgetnode(3d) -- VL node handling routines
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vlGetNode returns a handle to a VL node with the specified characteristics. The node handle can be used in subsequent calls to vlCreatePath(3dm) or vlSetControl(3dm). Nodes are used to construct paths which tell the system how to interconnect video data streams. The source and drain of a video stream, as well as intermediate filters affecting data flowing between them, are types of nodes. A path may have multiple drain nodes, and in some cases, multiple source nodes. Nodes have various controls ... |
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video/vlGetPathDelay(3d) -- get the time delay between two jacks in a VLPath
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server expects the VL server to use path expects the VLPath for which you want a path delay node1 expects the VLNode (usually a VL_VIDEO or VL_SCREEN node) representing the first jack in which you are interested port1 VLPort for that node (VL_ANY for default port) node2 same, for second jack in which you are interested port2 VLPort for that node (VL_ANY for default port) |
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video/vlgetstring(3d) -- returns a string describing the current VL connection.
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vlGetString returns a pointer to a static string describing some aspect of the current VL connection. This string must be free'd by the caller. The name parameter must be the following: VL_EXTENSIONS Returns a space-separated list of supported extensions to VL. |
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video/vlGetUSTMSCPair(3d) -- get the time at which a field/frame came in or will go out
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server expects the VL server to use path expects the VL path containing the jack in which you are interested jackNode expects the VLNode (usually a VL_VIDEO or VL_SCREEN node) representing the jack in which you are interested. jackPort VLPort for that node (VL_ANY for default port) memNode expects the VL_MEM VLNode representing the buffer for which you want a UST/MSC pair. returnedPair expects a pointer to memory in which to return a UST/MSC pair... |
